What does it mean if the irs is saying there’s a delay because of 1091

[GregJ]

IRS reference code 1091 signifies a full or partial "offset" of your refund.  An offset means IRS is taking some/all of your refund due to certain debts you may have (Child Support, Certain Federal and State Debts, and Unemployment Compensation Debts).

Here is a link to the IRS page discussing the various aspects of offsets:  https://www.irs.gov/taxtopics/tc203.html.  Note the telephone contact number which you can call for information.  If you are subject to an offset, you should expect to receive a notification letter from IRS shortly.